We’ve recently switched from a one inch thick air filter to a four inch thick air filter.
We were buying the one inch air filters because they were cheaper and it seemed to be stopping the dust and debri.
However, the HVAC technician who services our HVAC system told us that it wasn’t doing the job well. There was a lot of dust and dirt escaping. He recommended switching to at least a two inch air filter, but we decided to jump to a four inch instead. We didn’t trust that a one inch difference was going to make a big enough impact, so the four inch seemed like a good idea. The four inch air filters are expensive, but they can be purchased in packs of two or on a subscription plan for a cheaper rate. We have a lot of allergies in our household and someone with severe asthma, so the air quality is worth investing in. We do whatever our HVAC technician suggests because it usually makes us feel better. The air quality needs to be perfect and these four inch thick air filters felt like the next step for us. The brand we purchased said that it was known for removing microscopic particles from the air along with bacteria and other airborne illnesses. This was exactly what we needed and we’re happy with our decision. We’re thankful for the HVAC technician who works on our HVAC system because he always has our best interest at heart.